Increased American Nationalism. Americans became very proud of their country due to their recent successes.
America is awesome!
I don't like this decision very much, but it's the only thing to do. We have to sign off our land and live in a retreat to preserve our culture.
Another effect of the War of 1812 was weakened Native American resistance. When the British stopped supplying the Natives with food and advanced weapons, they had very low chances of beating the Americans. Although some tried to fight for their ground, no one succeded.
What do we do now chief? Without supplies and advanced weapons how can we fight the Americans?
Another effect of the war was that US manufacturing grew. After the Embargo Act the US had to start making its own good due to the lack of trade with Britain and other countries. This caused the industrial revolution and made America the place it is today.
How are the ships coming along? Without Britain's supplies we need to make our own ships.
The ships are coming along well. This has opened many new jobs for people.